E.F. Johnson Company 53SL ES Series, Руководство по эксплуатации

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53SL ES Series Mobile Radio Operating Manual April 2009 7-19
SmartZone and P25 Trunking Unique Features Section 7 - SMARTNET / SmartZone / P25 Trunked Features
SmartZone and P25 trunked systems can be programmed for “Disable Site Trunking
Operation”. The radio is then not allowed to start or operate on a site trunking site. If a site
goes into site trunking, the radio leaves that site’s control channel and attempts to find
another valid wide area site. If no wide area site is available, the radio displays “OUT-OF-
RANGE”. If a site adjacent to the current Home Site was in site trunking but then enters
wide area trunking, it is evaluated to determine if it should move to that site as a better
site.
7.13.3 Determining Current Site and Searching for a New Site
To display the RSSI level of the current site, press the SEARCH option switch. The
display then indicates the current site number as “SITE xx” and the RSSI (Receive Signal
Strength Indicator) signal level as “RSSI xx”. This mode is then automatically exited.
To scroll through the other programmed sites, press and hold the SEARCH option switch
while “SITE xx” or “RSSI xx” is displayed. If site lock is on when site search is entered
(see following), the radio will be locked on the new site when this function is exited.
Note
If a site failure occurs, the radio will automatically leave the failed site and register on
another site (after a predetermined delay). When the failed site recovers, the radio will
(after a predetermined delay) return to the site.
7.13.4 Locking / Unlocking a Site
It is sometimes desirable to stay on a site. To prevent the radio from searching for a new
site, lock it on the current site by pressing the LOCK option switch. The display then
momentarily indicates the site alias to indicate that the current site is locked (“x” is the
current site number). To unlock the site, press the LOCK option switch again and
“UNLOCK” is momentarily displayed.
When the user site locks radio, the icon will begin to flash. The site lock indicator
will be hidden while the radio is in menu mode, unit call, or interconnect call. Site lock is
a global setting but the icon will only be displayed in P25 and SmartZone.
7.13.5 Auto Site Search
Auto site search automatically searches sites and ranks them in a “Best Sites” list. Press
the Auto Site Search option switch to display the current site number or alias and RSSI
level of the current site. A "Press and Hold" of the Auto Site Search option switch will
cause the radio to automatically move from the current site and select the first/next site
from the "Best Sites" list.